Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop

Performance

Accessibility

Best Practices

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.60 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.10 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

59 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.83 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

4.10 s

Page Load Progression

581 ms

1.2 s

1.7 s

2.3 s

2.9 s

3.5 s

4.1 s

4.6 s

Checks

18 PASS 5 REVIEW

Third-Party Impact

47% third-party, 0 ms blocking

REVIEW

47% third-party, 0 ms blocking

Third-party code accounts for 47% of page weight (131.9 KiB of 278.0 KiB)

Third-party blocking time is low (0 ms)

53%

47%

First-party Third-party

JS Execution Cost

863ms total JS execution

REVIEW

863ms total JS execution

https://sra-truthguard.pages.dev/: 392ms CPU time

https://sra-truthguard.pages.dev/assets/index-CTm-...: 238ms CPU time

Unattributable: 233ms CPU time

Main Thread Breakdown

Style & Layout 38% Other 31% Script Evaluation 26%

Script	Total	Scripting	Parse/Compile	Party
https://sra-truthguard.pages.dev/	392ms	6ms	1ms	1st
https://sra-truthguard.pages.dev/assets/index-CTm-0o_K.js	238ms	202ms	3ms	1st
Unattributable	233ms	19ms	0ms	1st

JS Bundles

1 scripts, 85 KB unused

REVIEW

1 scripts, 85 KB unused

https://sra-truthguard.pages.dev/assets/index-CTm-...: 85 KB unused (62%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 85 KB

85 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://sra-truthguard.pages.dev/assets/index-CTm-0o_K.js	138 KB	85 KB (62%)	✓	1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

HTTP Caching

public, max-age=0, must-revalidate

REVIEW

public, max-age=0, must-revalidate

Cache-Control header is set

Got: public, max-age=0, must-revalidate

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

public, max-age=0, must-revalidate

Directive	Value	Meaning
public	—	Any cache may store this response
max-age	0	Cache for 0 seconds
must-revalidate	—	Must recheck with server after expiry

A+

Page Weight Budget

278 KB transferred, 13 requests

PASS

278 KB transferred, 13 requests

Page weighs 657 KB (278 KB transferred)

13 HTTP requests

Estimated 0.06 g CO2 per page load

278 KB transferred

13 requests

0.06 g CO2 per page load

JavaScript 137.9 KiB 50%

Fonts 130.6 KiB 47%

CSS 8.0 KiB 3%

HTML 791 B 0%

Other 751 B 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Image Optimization

No images on this page

PASS

No images on this page

0 images 0 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

Font Loading

2 fonts (131 KB)

PASS

2 fonts (131 KB)

2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

131 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

UcC73FwrK3iLTeHuS_nVMrM... woff2 swap

Size 47 KB

Load time 9 ms

Start 478 ms

Risk FOUT — text flashes from fallback to web font

UcC73FwrK3iLTeHuS_nVMrM... woff2 swap

Size 83 KB

Load time 15 ms

Start 478 ms

Risk FOUT — text flashes from fallback to web font

Optimization checklist

Preload critical fonts (priority=high)
Use woff2 format for all fonts
Set font-display to swap, optional, or fallback
Subset large fonts (≤100 KB each)

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

Document Compression

Document response uses brotli

PASS

Document response uses brotli

Main HTML response uses brotli (Content-Encoding: br)

Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML max-age=0 (≤ 5min) is appropriate

PASS

Main HTML max-age=0 (≤ 5min) is appropriate

Got: public, max-age=0, must-revalidate

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

Compressed response missing `Vary` header

The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.

No `ETag` or `Last-Modified` -- conditional GET not supported

Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

Page Weight Inventory

13 resources · 278 KB · 85 KB savings available

PASS

13 resources · 278 KB · 85 KB savings available

Within 1MB page-weight target

Got: 278 KB

~85 KB of savings available

9 third-party resources (47% of weight)

13 resources · 278.0 KiB · 9 third-party Within 1MB page-weight target

JavaScript 50% · 137.9 KiB

Font 47% · 130.6 KiB

CSS 3% · 8.0 KiB

Document 1% · 1.5 KiB

Other 0% · 0 B

~84.9 KiB of savings available

Remove unused JavaScript: 84.9 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

13 resources			278.0 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

13 requests over 3698ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.